2026 · jordimarsal/mcp-transparent-png

mcp-transparent-png

MCP (Model Context Protocol) server that makes PNG colors transparent (alpha channel) with rgb/auto/greenscreen modes.

Problem

Agents increasingly need real file operations; MCP is the protocol, and small focused tools are the best way to learn it for real.

Highlights

• Implements MCP over stdio in Python 3.13+.
• Three transparency modes: exact rgb match, auto dominant-color detection, greenscreen.
• GitHub Actions smoke checks on every push.

Stack

• Python 3.13
• MCP
• Pillow
• GitHub Actions

Metrics

3

transparency modes